/* ============================================
   德洛斯照明 - 商务白蓝主题（V2）
   深海蓝 + 纯净白 + 几何金属分割
   ============================================ */

:root {
  /* 主色 - 深海蓝（高级商务感） */
  --navy: #0E3A6F;
  --navy-light: #1E5BB8;
  --navy-lighter: #4A7BC2;
  --navy-pale: #EBF2FA;

  --primary: #0E3A6F;
  --primary-dark: #08234A;
  --primary-light: #EBF2FA;

  /* 金属辅助 - 商务提亮 */
  --gold: #1E5BB8;
  --gold-light: #7BA8E5;

  /* 背景层级 */
  --bg-main: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-section: #F6F8FB;
  --bg-deep: #0A2540;

  /* 文字层级 */
  --text-primary: #0F1B2D;
  --text-secondary: #4A5A6E;
  --text-muted: #8099AA;
  --text-light: #AABBC8;
  --text-on-deep: rgba(255, 255, 255, 0.92);
  --text-on-deep-muted: rgba(255, 255, 255, 0.65);

  --accent: #1E5BB8;
  --border: #E2EAF2;
  --border-strong: #CCD9E5;

  /* 阴影 - 克制化（低透明、深色阴影） */
  --shadow: 0 2px 8px -2px rgba(10, 31, 61, 0.06), 0 1px 2px -1px rgba(10, 31, 61, 0.04);
  --shadow-lg: 0 12px 32px -8px rgba(10, 31, 61, 0.10), 0 4px 12px -4px rgba(10, 31, 61, 0.06);

  /* 字体系统 */
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-metric: "Oswald", "Arial Narrow", "Helvetica Neue", sans-serif;
}

/* 基础重置 */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-main);
  margin: 0;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 商务符号系统 */
.section-index {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-metric);
  font-size: 13px;
  font-weight: 500;
  color: var(--navy);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.section-index::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--gold);
  margin-right: 8px;
  transform: translateY(-4px);
}
.section-index-total {
  color: var(--text-light);
  font-size: 12px;
  letter-spacing: 0.1em;
}
.gold-rule {
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 0;
  border: 0;
}
.gold-rule-center { margin: 0 auto; }
.gold-rule-left { margin: 0; }

/* 数字字体优化 */
.tabular-nums { font-variant-numeric: tabular-nums; }

/* 导航栏 */
.navbar {
  position: fixed;
  top: 36px;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: all 0.3s ease;
}
.navbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.05em;
}
.navbar-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--navy);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
}
.navbar-menu {
  display: flex;
  gap: 36px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.navbar-menu a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.navbar-menu a:hover { color: var(--navy); }
.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--navy);
  transition: width 0.3s;
}
.navbar-menu a:hover::after { width: 100%; }
.navbar-cta {
  padding: 10px 24px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 20px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.navbar-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: all 0.3s;
}

/* Banner 轮播 */
.banner {
  position: relative;
  height: 100vh;
  min-height: 600px;
  max-height: 1090px;
  overflow: hidden;
  background: #f0f6ff;
}
.banner-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.banner-slide.active { opacity: 1; }
.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: kenburns 8s ease-out forwards;
}
@keyframes kenburns {
  from { transform: scale(1); }
  to { transform: scale(1.08); }
}
.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.65) 0%, rgba(0, 102, 204, 0.2) 50%, rgba(0, 102, 204, 0.4) 100%);
}
.banner-content {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  z-index: 10;
}
.banner-content-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}
.banner-title {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 0.04em;
  margin: 0 0 20px;
  opacity: 0;
  transform: translateX(-30px);
  animation: bannerFadeIn 1s 0.3s ease-out forwards;
}
.banner-subtitle {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--gold-light);
  font-weight: 500;
  letter-spacing: 0.15em;
  margin: 0;
  opacity: 0;
  transform: translateX(-30px);
  animation: bannerFadeIn 1s 0.6s ease-out forwards;
}
.banner-meta {
  margin-top: 28px;
  display: flex;
  gap: 40px;
  opacity: 0;
  animation: bannerFadeIn 1s 0.9s ease-out forwards;
}
.banner-meta-item {
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.banner-meta-item::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  display: inline-block;
}
.banner-gold-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--gold) 50%, transparent 100%);
  z-index: 10;
  opacity: 0.85;
}
.banner-tagline {
  margin-top: 24px;
  display: flex;
  gap: 32px;
  opacity: 0;
  animation: bannerFadeIn 1s 0.9s ease-out forwards;
}
.banner-tagline-item {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.banner-tagline-item::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}
@keyframes bannerFadeIn {
  to { opacity: 1; transform: translateX(0); }
}
.banner-indicators {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  gap: 12px;
}
.banner-dot {
  width: 40px;
  height: 3px;
  background: rgba(255, 255, 255, 0.3);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
}
.banner-dot.active {
  background: var(--accent);
  width: 60px;
}
.banner-scroll-hint {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  text-align: center;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* 通用 section */
.section {
  padding: 120px 0;
  position: relative;
}
.section-header {
  text-align: center;
  margin-bottom: 72px;
}
.section-header-left {
  text-align: left;
  margin-bottom: 56px;
}
.section-label {
  display: inline-block;
  font-family: var(--font-metric);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--navy);
  text-transform: uppercase;
  margin-bottom: 14px;
  font-weight: 500;
}
.section-title {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 18px;
  line-height: 1.3;
  letter-spacing: 0.04em;
}
.section-divider {
  width: 48px;
  height: 1px;
  background: var(--gold);
  margin: 0 auto;
  position: relative;
}
.section-divider::before,
.section-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 4px;
  height: 4px;
  background: var(--gold);
  border-radius: 50%;
  transform: translateY(-50%);
}
.section-divider::before { left: -10px; }
.section-divider::after { right: -10px; }
.section-header-left .section-divider { margin: 0; }
.section-desc {
  max-width: 720px;
  margin: 20px auto 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  letter-spacing: 0.05em;
}
.container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 40px;
}

/* 产品矩阵 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
  cursor: pointer;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.product-card-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--navy-pale);
  overflow: hidden;
}
.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.product-card:hover .product-card-img img {
  transform: scale(1.08);
}
.product-card-body {
  padding: 20px;
  text-align: center;
}
.product-card-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
}
.product-card-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* 低位照明聚焦 */
.focus-section {
  background: var(--bg-card);
}
.focus-grid {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: 0;
  align-items: stretch;
}
.focus-img {
  width: 100%;
  min-height: 500px;
  position: relative;
  overflow: hidden;
}
.focus-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.focus-img-badge {
  position: absolute;
  top: 30px;
  left: 30px;
  padding: 8px 20px;
  background: var(--accent);
  color: var(--navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 14px;
  border-radius: 2px;
}
.focus-content {
  padding: 60px 50px;
  background: var(--navy-pale);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.focus-content h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
  line-height: 1.4;
}
.focus-content p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.focus-features {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.focus-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--navy);
  font-weight: 500;
}
.focus-feature::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: var(--navy);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
}

/* 公司简介 */
.about-section {
  background: var(--bg-card);
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
}
.about-text p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.about-cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.about-cert {
  background: var(--navy-pale);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 16px;
  text-align: center;
  transition: all 0.3s;
}
.about-cert:hover {
  border-color: var(--navy);
  transform: translateY(-2px);
}
.about-cert-name {
  font-family: var(--font-metric);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 6px;
}
.about-cert-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* 数据实力 */
.stats-section {
  background: var(--navy);
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=modern%20factory%20production%20line%20dark%20blue%20industrial%20lighting&image_size=landscape_16_9') center/cover;
  opacity: 0.1;
}
.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.stat-item {
  text-align: center;
  padding: 20px 0;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}
.stat-item:last-child { border-right: none; }
.stat-number {
  font-family: var(--font-metric);
  font-size: 64px;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  margin: 0 0 12px;
}
.stat-suffix {
  font-size: 24px;
}
.stat-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 15px;
  margin: 0;
}
.stats-extra {
  position: relative;
  z-index: 1;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}
.stats-extra-item {
  color: rgba(255, 255, 255, 0.9);
}
.stats-extra-num {
  font-family: var(--font-metric);
  font-size: 36px;
  font-weight: 700;
  color: #fff;
}
.stats-extra-desc {
  font-size: 14px;
  margin-top: 8px;
}

/* 研发实力 */
.rd-section {
  background: var(--bg-card);
}
.rd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.rd-text h3 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--navy);
  margin: 0 0 24px;
}
.rd-text p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.9;
  margin: 0 0 16px;
}
.rd-params {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.rd-param {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--navy-pale);
  border-radius: 8px;
  border-left: 3px solid var(--navy);
}
.rd-param-icon {
  width: 40px;
  height: 40px;
  background: var(--navy);
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-metric);
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}
.rd-param-info {
  flex: 1;
}
.rd-param-value {
  font-family: var(--font-metric);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.rd-param-label {
  font-size: 12px;
  color: var(--text-muted);
  margin: 2px 0 0;
}
.rd-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.rd-img img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
}

/* 发展历程 */
.timeline-section {
  background: var(--bg-section);
}
.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--navy-lighter);
  transform: translateX(-50%);
}
.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 40px 50px;
}
.timeline-item:nth-child(odd) {
  left: 0;
  text-align: right;
}
.timeline-item:nth-child(even) {
  left: 50%;
}
.timeline-item::after {
  content: '';
  position: absolute;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 3px solid var(--navy);
  border-radius: 50%;
  z-index: 1;
}
.timeline-item:nth-child(odd)::after {
  right: -8px;
}
.timeline-item:nth-child(even)::after {
  left: -8px;
}
.timeline-period {
  font-family: var(--font-metric);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
}
.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: left;
  box-shadow: var(--shadow);
}
.timeline-item:nth-child(odd) .timeline-card {
  text-align: left;
}
.timeline-event {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 8px;
}
.timeline-event::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--navy-lighter);
  border-radius: 50%;
}
.timeline-event:last-child { margin-bottom: 0; }

/* 新闻频道 */
.news-section {
  background: var(--bg-card);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.news-card-img {
  width: 100%;
  height: 140px;
  overflow: hidden;
  background: var(--navy-pale);
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.news-card:hover .news-card-img img {
  transform: scale(1.08);
}
.news-card-body {
  padding: 16px;
}
.news-card-date {
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--navy-lighter);
  margin: 0 0 6px;
}
.news-card-title {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
  line-height: 1.4;
  transition: color 0.2s;
}
.news-card:hover .news-card-title {
  color: var(--navy-light);
}
.news-card-summary {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card-more {
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--navy);
  letter-spacing: 0.1em;
}
.news-more-btn {
  text-align: center;
  margin-top: 50px;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-primary:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
  border-radius: 4px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
}
.btn-outline:hover {
  background: var(--navy);
  color: #fff;
}

/* 页脚 */
.footer {
  background: #fff;
  color: var(--text-secondary);
  padding: 60px 0 0;
  border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
}
.footer-brand h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--navy);
  margin: 0 0 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 20px;
}
.footer-certs {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-cert {
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-metric);
  font-size: 12px;
  color: var(--text-muted);
}
.footer-col h5 {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 20px;
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--navy); }
.footer-contact-item {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--text-muted);
}
.footer-contact-label {
  color: var(--text-light);
  flex-shrink: 0;
  width: 60px;
}
.footer-bottom {
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}

/* 滚动渐入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 响应式 */
@media (max-width: 1280px) {
  .products-grid { grid-template-columns: repeat(3, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
}
@media (max-width: 768px) {
  .navbar-menu { display: none; }
  .menu-toggle { display: flex; }
  .navbar-inner { padding: 0 20px; }
  .banner-title { font-size: 32px; }
  .banner-subtitle { font-size: 20px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .focus-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-cert-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 20px; }
  .rd-grid { grid-template-columns: 1fr; }
  .rd-params { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .container { padding: 0 20px; }
  .timeline::before { left: 20px; }
  .timeline-item { width: 100%; left: 0 !important; padding-left: 50px; padding-right: 0; text-align: left !important; }
  .timeline-item::after { left: 12px !important; right: auto !important; }
  .stats-extra { grid-template-columns: 1fr; }
}

/* ============================================
   内页通用样式
   ============================================ */

/* 内页 Banner */
.page-banner {
  position: relative;
  height: 420px;
  margin-top: 108px;
  overflow: hidden;
  background: var(--navy);
}
.page-banner-img {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
}
.page-banner-img img {
  width: 100%; height: 100%; object-fit: cover;
}
.page-banner-overlay {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(0,102,204,0.85) 0%, rgba(0,102,204,0.5) 100%);
}
.page-banner-content {
  position: relative; z-index: 2;
  height: 100%;
  display: flex; flex-direction: column;
  justify-content: center;
  max-width: 1400px; margin: 0 auto; padding: 0 40px;
}
.page-banner-label {
  font-family: var(--font-metric);
  font-size: 14px; letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin: 0 0 12px;
}
.page-banner-title {
  font-family: var(--font-serif);
  font-size: 44px; font-weight: 700;
  color: #fff; margin: 0 0 16px; line-height: 1.3;
}
.page-banner-desc {
  font-size: 16px; color: rgba(255,255,255,0.8);
  max-width: 600px; line-height: 1.8; margin: 0;
}

/* 面包屑 */
.breadcrumb {
  max-width: 1400px; margin: 0 auto;
  padding: 20px 40px;
  font-size: 13px; color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--navy); }
.breadcrumb span { margin: 0 8px; }

/* 产品列表页 */
.product-list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.product-list-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.product-list-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.product-list-card-img {
  width: 100%; height: 260px;
  overflow: hidden; background: var(--navy-pale);
}
.product-list-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.product-list-card:hover .product-list-card-img img { transform: scale(1.08); }
.product-list-card-body { padding: 24px; }
.product-list-card-name {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 8px;
}
.product-list-card-desc {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0 0 16px;
}
.product-list-card-tags {
  display: flex; gap: 8px; flex-wrap: wrap;
}
.product-list-card-tag {
  padding: 2px 10px; font-size: 12px;
  background: var(--navy-pale); color: var(--navy);
  border-radius: 10px;
}

/* 产品分类筛选 */
.product-filter {
  display: flex; gap: 12px; flex-wrap: wrap;
  margin-bottom: 40px; justify-content: center;
}
.product-filter-btn {
  padding: 8px 24px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 14px; color: var(--text-secondary);
  cursor: pointer; transition: all 0.2s;
}
.product-filter-btn:hover,
.product-filter-btn.active {
  background: var(--navy); color: #fff;
  border-color: var(--navy);
}

/* 产品详情 */
.product-detail-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.product-detail-img {
  border-radius: 8px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.product-detail-img img { width: 100%; display: block; }
.product-detail-info h1 {
  font-family: var(--font-serif);
  font-size: 36px; color: var(--navy);
  margin: 0 0 16px;
}
.product-detail-info p {
  font-size: 15px; color: var(--text-secondary);
  line-height: 1.9; margin: 0 0 16px;
}
.product-params-table {
  width: 100%; margin-top: 24px;
  border-collapse: collapse;
}
.product-params-table th,
.product-params-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px; text-align: left;
}
.product-params-table th {
  background: var(--navy-pale);
  color: var(--navy); font-weight: 600;
  width: 140px;
}

/* 解决方案卡片 */
.solution-list-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.solution-card {
  position: relative;
  height: 320px;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: #fff;
  display: block;
  transition: transform 0.3s;
}
.solution-card:hover { transform: translateY(-4px); }
.solution-card img {
  position: absolute; top:0; left:0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.solution-card:hover img { transform: scale(1.1); }
.solution-card-overlay {
  position: absolute; top:0; left:0; width:100%; height:100%;
  background: linear-gradient(to top, rgba(0,102,204,0.9) 0%, rgba(0,102,204,0.3) 100%);
}
.solution-card-body {
  position: absolute; bottom: 0; left: 0; right: 0;
  padding: 24px; z-index: 2;
}
.solution-card-name {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  margin: 0 0 8px;
}
.solution-card-desc {
  font-size: 13px; opacity: 0.85; line-height: 1.5;
}

/* 痛点列表 */
.pain-points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-point {
  padding: 32px 24px;
  background: var(--navy-pale);
  border-radius: 8px;
  border-top: 3px solid var(--navy);
}
.pain-point-icon {
  width: 48px; height: 48px;
  background: var(--navy); color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin-bottom: 16px;
}
.pain-point h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 12px;
}
.pain-point p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin: 0;
}

/* 优势列表 */
.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.advantage-item {
  display: flex; gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.advantage-item:hover {
  border-color: var(--navy);
  box-shadow: var(--shadow);
}
.advantage-num {
  font-family: var(--font-metric);
  font-size: 36px; font-weight: 700;
  color: var(--navy-lighter);
  line-height: 1; flex-shrink: 0;
}
.advantage-info h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 8px;
}
.advantage-info p {
  font-size: 14px; color: var(--text-secondary);
  line-height: 1.7; margin: 0;
}

/* 案例列表 */
.case-list-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}
.case-card {
  background: var(--bg-card);
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all 0.3s;
  border: 1px solid var(--border);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--navy);
}
.case-card-img {
  width: 100%; height: 280px;
  overflow: hidden;
}
.case-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.case-card:hover .case-card-img img { transform: scale(1.08); }
.case-card-body { padding: 24px; }
.case-card-tag {
  display: inline-block;
  padding: 2px 10px; font-size: 12px;
  background: var(--navy-pale); color: var(--navy);
  border-radius: 10px; margin-bottom: 12px;
}
.case-card-title {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 12px;
}
.case-card-desc {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0;
}

/* 案例详情 */
.case-detail-hero {
  position: relative;
  height: 500px;
  margin-top: 108px;
  overflow: hidden;
}
.case-detail-hero img {
  width: 100%; height: 100%; object-fit: cover;
}
.case-detail-hero-overlay {
  position: absolute; top:0; left:0; width:100%; height:100%;
  background: linear-gradient(to bottom, rgba(0,102,204,0.6) 0%, rgba(0,102,204,0.85) 100%);
}
.case-detail-hero-content {
  position: absolute; bottom: 60px; left: 0; right: 0;
  z-index: 2;
}
.case-detail-hero-content .container {
  display: flex; align-items: flex-end; justify-content: space-between;
}
.case-detail-hero h1 {
  font-family: var(--font-serif);
  font-size: 40px; color: #fff;
  margin: 0 0 12px;
}
.case-detail-hero p {
  font-size: 16px; color: rgba(255,255,255,0.8);
  margin: 0;
}

/* 细节图轮播 */
.detail-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.detail-gallery-item {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.detail-gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.detail-gallery-item:hover img { transform: scale(1.1); }

/* 新闻列表页 */
.news-list-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
}
.news-list-main .news-list-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
}
.news-list-main .news-list-item:hover .news-list-item-title { color: var(--navy-light); }
.news-list-item-img {
  width: 240px; height: 160px;
  border-radius: 8px; overflow: hidden;
}
.news-list-item-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.4s;
}
.news-list-item:hover .news-list-item-img img { transform: scale(1.08); }
.news-list-item-body { display: flex; flex-direction: column; justify-content: center; }
.news-list-item-date {
  font-family: var(--font-metric);
  font-size: 13px; color: var(--navy-lighter);
  margin: 0 0 8px;
}
.news-list-item-title {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  color: var(--navy); margin: 0 0 12px;
  transition: color 0.2s;
}
.news-list-item-summary {
  font-size: 14px; color: var(--text-muted);
  line-height: 1.6; margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 新闻侧边栏 */
.news-sidebar {
  position: sticky; top: 100px;
}
.news-sidebar-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 24px;
}
.news-sidebar-block h4 {
  font-family: var(--font-serif);
  font-size: 18px; color: var(--navy);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--navy);
}
.news-sidebar-item {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none; color: inherit;
}
.news-sidebar-item:last-child { border-bottom: none; }
.news-sidebar-item-title {
  font-size: 14px; color: var(--text-primary);
  line-height: 1.5; margin: 0 0 4px;
  transition: color 0.2s;
}
.news-sidebar-item:hover .news-sidebar-item-title { color: var(--navy); }
.news-sidebar-item-date {
  font-family: var(--font-metric);
  font-size: 12px; color: var(--text-muted);
}

/* ========== 新闻详情页 ========== */
.news-detail-header {
  padding: 140px 0 60px;
  background: linear-gradient(135deg, var(--navy) 0%, #0066CC 100%);
  color: #fff;
}
.news-detail-header .breadcrumb a:hover { color: #fff; }
.news-detail-cat {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  letter-spacing: 1px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.news-detail-title {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  margin: 0 0 20px;
  max-width: 900px;
}
.news-detail-meta {
  display: flex;
  gap: 24px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  font-family: var(--font-metric);
}
.news-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}
.news-detail-main {
  background: #fff;
  padding: 40px;
  border-radius: 8px;
}
.news-detail-cover {
  margin: 0 0 32px;
  border-radius: 6px;
  overflow: hidden;
}
.news-detail-cover img {
  width: 100%;
  display: block;
}
.news-detail-summary {
  padding: 16px 24px;
  background: var(--navy-pale);
  border-left: 4px solid var(--accent);
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 32px;
  border-radius: 0 4px 4px 0;
}
.news-detail-content p {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
  margin: 0 0 20px;
}
.news-detail-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.news-detail-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 20px;
  border: 1px solid var(--border);
  border-radius: 6px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.2s;
}
.news-detail-nav-item:hover {
  border-color: var(--navy);
  background: var(--navy-pale);
}
.news-detail-nav-item.news-detail-nav-right {
  text-align: right;
}
.news-detail-nav-disabled {
  opacity: 0.5;
  pointer-events: none;
}
.news-detail-nav-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.news-detail-nav-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
@media (max-width: 992px) {
  .news-detail-layout { grid-template-columns: 1fr; }
  .news-detail-title { font-size: 28px; }
  .news-detail-main { padding: 24px; }
  .news-detail-nav { flex-direction: column; }
  .news-detail-nav-item.news-detail-nav-right { text-align: left; }
}

/* 荣誉专利 */
.honor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.honor-item {
  text-align: center;
  padding: 32px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.honor-item:hover {
  border-color: var(--navy);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.honor-item-icon {
  width: 60px; height: 60px;
  margin: 0 auto 16px;
  background: var(--navy-pale);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; color: var(--navy);
}
.honor-item-name {
  font-family: var(--font-serif);
  font-size: 15px; font-weight: 700;
  color: var(--navy); margin: 0 0 6px;
}
.honor-item-desc {
  font-size: 12px; color: var(--text-muted);
  margin: 0;
}

/* 工厂全景 */
.factory-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}
.factory-img {
  border-radius: 8px; overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.factory-img img { width: 100%; display: block; }
.factory-img-sub { margin-top: 16px; }
.about-gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.about-gallery img {
  width: 100%;
  display: block;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
@media (max-width: 768px) {
  .about-gallery { grid-template-columns: 1fr; }
}
.factory-text h3 {
  font-family: var(--font-serif);
  font-size: 32px; color: var(--navy);
  margin: 0 0 24px;
}
.factory-text p {
  color: var(--text-secondary);
  font-size: 15px; line-height: 1.9;
  margin: 0 0 16px;
}
.factory-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px; margin-top: 32px;
}
.factory-stat {
  padding: 20px;
  background: var(--navy-pale);
  border-radius: 8px;
}
.factory-stat-num {
  font-family: var(--font-metric);
  font-size: 32px; font-weight: 700;
  color: var(--navy); margin: 0 0 4px;
}
.factory-stat-label {
  font-size: 13px; color: var(--text-muted);
  margin: 0;
}

/* 内页响应式 */
@media (max-width: 1280px) {
  .product-list-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-list-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .news-list-layout { grid-template-columns: 1fr; }
  .news-sidebar { position: static; }
}
@media (max-width: 768px) {
  .page-banner { height: 300px; }
  .page-banner-title { font-size: 28px; }
  .page-banner-img { height: 360px; min-height: 300px; padding-top: 88px; }
  .page-banner-img .page-banner-gradient-inner { padding: 60px 20px 0; }
  .page-banner-gradient-title { font-size: 28px; }
  .page-banner-gradient-desc { font-size: 14px; max-width: 100%; }
  .product-list-grid { grid-template-columns: 1fr; }
  .product-detail-header { grid-template-columns: 1fr; }
  .solution-list-grid { grid-template-columns: 1fr; }
  .pain-points { grid-template-columns: 1fr; }
  .advantage-list { grid-template-columns: 1fr; }
  .case-list-grid { grid-template-columns: 1fr; }
  .detail-gallery { grid-template-columns: repeat(2, 1fr); }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-item-img { width: 100%; height: 200px; }
  .honor-grid { grid-template-columns: 1fr; }
  .factory-section { grid-template-columns: 1fr; }
}

/* ============================================
   顶部信息条
   ============================================ */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 36px;
  background: var(--navy);
  z-index: 1001;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
}
.topbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}
.topbar-left, .topbar-right {
  display: flex; gap: 24px;
}
.topbar-item a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}
.topbar-item a:hover { text-decoration: underline; }

/* 导航CTA按钮改为链接 */
.navbar-cta {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

/* 灰底区块（视觉层次交替） */
.section-gray {
  background: var(--bg-section);
}

/* 首页关于预览：左图右文 */
.about-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 60px;
  align-items: center;
  margin-top: 20px;
}
.about-preview-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.about-preview-img img {
  width: 100%;
  display: block;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.about-preview-text h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: #fff;
  margin: 0 0 20px;
}
.about-preview-text p {
  font-size: 15px;
  color: rgba(255,255,255,0.8);
  line-height: 1.9;
  margin: 0 0 16px;
}
@media (max-width: 768px) {
  .about-preview-grid { grid-template-columns: 1fr; gap: 30px; }
}

/* 首页关于-企业数据行 */
.about-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
  padding: 32px 20px;
  background: rgba(255,255,255,0.06);
  border-radius: 8px;
}
.about-stat-item {
  text-align: center;
}
.about-stat-num {
  font-family: var(--font-metric);
  font-size: 40px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 4px;
  line-height: 1;
}
.about-stat-num span {
  font-size: 24px;
  margin-left: 2px;
}
.about-stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  margin: 0;
}

/* 首页关于-工程业绩 */
.about-achievement {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 32px;
  padding: 40px 30px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
}
.about-achievement-item {
  text-align: center;
  position: relative;
}
.about-achievement-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -15px;
  top: 10%;
  height: 80%;
  width: 1px;
  background: rgba(255,255,255,0.12);
}
.about-achievement-num {
  font-family: var(--font-metric);
  font-size: 52px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px;
  line-height: 1;
}
.about-achievement-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin: 0;
}
@media (max-width: 768px) {
  .about-stats-row { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-stat-num { font-size: 32px; }
  .about-achievement { grid-template-columns: 1fr; gap: 24px; }
  .about-achievement-item:not(:last-child)::after { display: none; }
  .about-achievement-num { font-size: 40px; }
}

/* ============================================
   关于我们 - 认证徽章墙
   ============================================ */
.cert-wall {
  margin-top: 60px;
  padding-top: 48px;
  border-top: 1px solid var(--border);
}
.cert-wall-title {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--navy);
  text-align: center;
  margin: 0 0 32px;
}
.cert-wall-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.cert-badge {
  text-align: center;
  padding: 28px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.3s;
}
.cert-badge:hover {
  border-color: var(--navy);
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.cert-badge-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  background: var(--navy-pale);
  color: var(--navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-metric);
  font-size: 14px;
  font-weight: 700;
}
.cert-badge-name {
  font-family: var(--font-metric);
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 4px;
}
.cert-badge-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
}

/* ============================================
   关于我们 - 研发实力检测能力网格
   ============================================ */
.rd-capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.rd-capability-item {
  padding: 28px 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px;
  text-align: center;
  transition: all 0.3s;
}
.rd-capability-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.rd-capability-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  background: var(--accent);
  color: var(--navy);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
}
.rd-capability-item h5 {
  font-family: var(--font-serif);
  font-size: 16px;
  color: #fff;
  margin: 0 0 10px;
}
.rd-capability-item p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 768px) {
  .cert-wall-grid { grid-template-columns: repeat(2, 1fr); }
  .rd-capability-grid { grid-template-columns: 1fr; }
}

/* ============================================
   留言咨询表单
   ============================================ */
.inquiry-section {
  background: var(--navy-pale);
  padding: 80px 0;
}
.inquiry-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}
.inquiry-info h2 {
  font-family: var(--font-serif);
  font-size: 36px;
  color: var(--navy);
  margin: 0 0 20px;
}
.inquiry-info > p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin: 0 0 32px;
}
.inquiry-contact {
  display: flex;
  gap: 40px;
}
.inquiry-contact-item {
  border-left: 3px solid var(--navy);
  padding-left: 16px;
}
.inquiry-contact-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.inquiry-contact-value {
  font-family: var(--font-metric);
  font-size: 24px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.inquiry-form {
  background: #fff;
  padding: 40px;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}
.inquiry-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
  outline: none;
  border-color: var(--navy);
}
.inquiry-form input {
  margin-bottom: 16px;
}
.inquiry-form textarea {
  margin-bottom: 20px;
  resize: vertical;
}
.inquiry-submit {
  width: 100%;
  padding: 14px;
  font-size: 15px;
  border: none;
  cursor: pointer;
}
.inquiry-tip {
  font-size: 13px;
  text-align: center;
  margin: 12px 0 0;
  min-height: 18px;
}

/* ============================================
   悬浮在线客服
   ============================================ */
.float-contact {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.float-contact-btn {
  width: 56px;
  height: 56px;
  background: var(--navy);
  color: #fff;
  border: none;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.3s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  overflow: hidden;
  position: relative;
}
.float-contact-btn:hover {
  background: var(--navy-light, #2a5a8a);
  width: 160px;
}
.float-contact-icon {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.float-contact-text {
  font-size: 13px;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.3s 0.1s;
  margin-top: 2px;
}
.float-contact-btn:hover .float-contact-text {
  opacity: 1;
}
.float-contact-top {
  background: rgba(0,102,204,0.85);
}

/* ============================================
   配色切换面板
   ============================================ */
.theme-switcher {
  position: fixed;
  right: 20px;
  bottom: 170px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.theme-switcher-btn {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.theme-switcher-btn:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.theme-switcher-btn.active::after {
  content: '✓';
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  background: rgba(0,0,0,0.3);
  border-radius: 10px;
}
.theme-switcher-btn .tooltip {
  position: absolute;
  right: 52px;
  background: rgba(0,0,0,0.8);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}
.theme-switcher-btn:hover .tooltip {
  opacity: 1;
}
.theme-switcher-toggle {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  background: var(--navy);
  color: #fff;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
}
.theme-switcher-toggle:hover {
  transform: scale(1.1);
}
.theme-switcher-panel {
  display: none;
  flex-direction: column;
  gap: 6px;
}
.theme-switcher-panel.open {
  display: flex;
}
@media (max-width: 768px) {
  .theme-switcher { right: 12px; bottom: 120px; }
  .theme-switcher-btn { width: 38px; height: 38px; }
  .theme-switcher-toggle { width: 38px; height: 38px; }
}

/* ============================================
   页脚二维码
   ============================================ */
.footer-qr {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-qr img {
  width: 80px;
  height: 80px;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.footer-qr span {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 留言区+悬浮客服响应式 */
@media (max-width: 768px) {
  .topbar-right { display: none; }
  .topbar-left { gap: 12px; font-size: 12px; }
  .inquiry-grid { grid-template-columns: 1fr; gap: 30px; }
  .inquiry-form { padding: 24px; }
  .inquiry-form-row { grid-template-columns: 1fr; }
  .inquiry-contact { flex-direction: column; gap: 16px; }
  .float-contact { right: 12px; bottom: 60px; }
  .float-contact-btn { width: 48px; height: 48px; }
}

/* ============================================
   产品卡片 V2 - CSS渐变+图标方案
   适用于：首页产品区块、产品列表页
   优势：不依赖产品图片素材，视觉专业统一
   ============================================ */
.product-card-v2 {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.product-card-v2:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 16px 40px -12px rgba(0, 102, 204, 0.25);
}

/* 视觉区：SVG产品图+CSS渐变叠加 */
.product-card-v2-visual {
  position: relative;
  height: 220px;
  background: linear-gradient(135deg, #0066CC 0%, #0088EE 50%, #0066CC 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-card-v2-visual img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 1;
  transition: transform 0.5s ease;
}
.product-card-v2:hover .product-card-v2-visual img {
  transform: scale(1.05);
}
.product-card-v2-visual.cat-low      { background: linear-gradient(135deg, #0066CC 0%, #0088EE 60%, #0066CC 100%); }
.product-card-v2-visual.cat-road     { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #0066CC 100%); }
.product-card-v2-visual.cat-tunnel   { background: linear-gradient(135deg, #004D99 0%, #0066CC 60%, #0088EE 100%); }
.product-card-v2-visual.cat-wash,
.product-card-v2-visual.cat-landscape{ background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #6B8DB8 130%); }
.product-card-v2-visual.cat-linear   { background: linear-gradient(135deg, #0066CC 0%, #355E8A 60%, #0066CC 100%); }
.product-card-v2-visual.cat-flood    { background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #0099FF 130%); }
.product-card-v2-visual.cat-strip    { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #4DA6FF 100%); }
.product-card-v2-visual.cat-system   { background: linear-gradient(135deg, #004D99 0%, #0088EE 60%, #0099FF 130%); }

/* 大字符图标（已废弃，由SVG替代；保留样式兼容旧模板） */
.product-card-v2-icon {
  font-family: var(--font-serif);
  font-size: 120px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.18);
  line-height: 1;
  user-select: none;
  position: relative;
  z-index: 2;
  transition: all 0.4s;
}
.product-card-v2:hover .product-card-v2-icon {
  color: rgba(0, 153, 255, 0.45);
  transform: scale(1.06);
}

/* 装饰元素：右上角金色光晕（在SVG之上） */
.product-card-v2-visual::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 140px; height: 140px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.35) 0%, transparent 70%);
  z-index: 3;
  pointer-events: none;
}
/* 装饰元素：底部金色光线 */
.product-card-v2-visual::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
  z-index: 3;
  pointer-events: none;
}

/* 产品分类小标签 */
.product-card-v2-cat {
  position: absolute;
  top: 16px; left: 16px;
  padding: 4px 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 11px;
  color: #fff;
  letter-spacing: 0.1em;
  z-index: 3;
}

/* 内容区 */
.product-card-v2-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.product-card-v2-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 8px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.product-card-v2-name-en {
  font-family: var(--font-metric);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-light);
  letter-spacing: 0.1em;
}
.product-card-v2-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 14px;
}

/* 标签 */
.product-card-v2-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.product-card-v2-tag {
  padding: 2px 10px;
  font-size: 11px;
  background: var(--navy-pale);
  color: var(--navy);
  border-radius: 10px;
}

/* 参数预览 */
.product-card-v2-params {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 16px;
}
.product-card-v2-param {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 12px;
}
.product-card-v2-param-label {
  color: var(--text-muted);
  flex-shrink: 0;
}
.product-card-v2-param-value {
  color: var(--navy);
  font-family: var(--font-metric);
  font-weight: 600;
}

/* CTA */
.product-card-v2-cta {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--navy);
  font-weight: 600;
  transition: color 0.2s;
}
.product-card-v2:hover .product-card-v2-cta { color: var(--accent); }
.product-card-v2-cta-arrow {
  display: inline-block;
  transition: transform 0.3s;
}
.product-card-v2:hover .product-card-v2-cta-arrow {
  transform: translateX(4px);
}

/* 响应式 */
@media (max-width: 768px) {
  .product-card-v2-visual { height: 160px; }
  .product-card-v2-icon { font-size: 90px; }
  .product-card-v2-params { grid-template-columns: 1fr; }
}

/* ============================================
   产品页 Banner - CSS渐变方案
   ============================================ */
.page-banner-gradient {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #004D99 0%, #0066CC 40%, #0088EE 100%);
  overflow: hidden;
}
.page-banner-gradient::before {
  content: '';
  position: absolute;
  top: -100px; right: -100px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.18) 0%, transparent 70%);
}
.page-banner-gradient::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}
.page-banner-gradient-inner {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 40px;
}
.page-banner-gradient-label {
  font-family: var(--font-metric);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 12px;
}
.page-banner-gradient-title {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 16px;
  line-height: 1.3;
}
.page-banner-gradient-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  max-width: 700px;
  line-height: 1.8;
  margin: 0;
}
/* 带背景图的Banner变体 */
.page-banner-img {
  position: relative;
  padding: 160px 0 80px;
  overflow: hidden;
}
.page-banner-img .banner-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-banner-img .banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-banner-img .banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0,77,153,0.85) 0%, rgba(0,102,204,0.70) 50%, rgba(44,82,130,0.60) 100%);
}
.page-banner-img .banner-gradient-bar {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 4px;
  z-index: 2;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 50%, transparent 100%);
}
.page-banner-img .page-banner-gradient-inner {
  position: relative;
  z-index: 3;
}
@media (max-width: 768px) {
  .page-banner-gradient { padding: 120px 0 60px; }
  .page-banner-gradient-title { font-size: 32px; }
  .page-banner-gradient-desc { font-size: 14px; }
  .page-banner-img { height: 360px; min-height: 300px; padding-top: 88px; }
  .page-banner-img .page-banner-gradient-inner { padding: 60px 20px 0; }
}

/* ============================================
   产品详情页 - 大图视觉块（CSS渐变方案）
   ============================================ */
.product-detail-visual {
  position: relative;
  width: 100%;
  height: 500px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #0066CC 0%, #0088EE 50%, #0066CC 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}
.product-detail-visual.cat-low    { background: linear-gradient(135deg, #0066CC 0%, #0088EE 60%, #0066CC 100%); }
.product-detail-visual.cat-road   { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #0066CC 100%); }
.product-detail-visual.cat-tunnel { background: linear-gradient(135deg, #004D99 0%, #0066CC 60%, #0088EE 100%); }
.product-detail-visual.cat-wash   { background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #6B8DB8 130%); }
.product-detail-visual.cat-linear { background: linear-gradient(135deg, #0066CC 0%, #355E8A 60%, #0066CC 100%); }
.product-detail-visual.cat-flood  { background: linear-gradient(135deg, #0066CC 0%, #4DA6FF 60%, #0099FF 130%); }
.product-detail-visual.cat-strip  { background: linear-gradient(135deg, #0066CC 0%, #3A6EA5 60%, #4DA6FF 100%); }
.product-detail-visual.cat-system { background: linear-gradient(135deg, #004D99 0%, #0088EE 60%, #0099FF 130%); }
.product-detail-visual::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, rgba(0, 153, 255, 0.30) 0%, transparent 70%);
}
.product-detail-visual::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--accent) 0%, transparent 100%);
}
.product-detail-visual-icon {
  font-family: var(--font-serif);
  font-size: 260px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.22);
  line-height: 1;
  user-select: none;
  position: relative;
  z-index: 2;
}
.product-detail-visual-cat {
  position: absolute;
  top: 24px; left: 24px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 12px;
  color: #fff;
  letter-spacing: 0.15em;
  z-index: 3;
}
.product-detail-visual-name {
  position: absolute;
  bottom: 24px; left: 24px;
  font-family: var(--font-metric);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.2em;
  z-index: 3;
}
@media (max-width: 768px) {
  .product-detail-visual { height: 320px; }
  .product-detail-visual-icon { font-size: 160px; }
}

/* ============================================
   内页补充样式（案例 / 新闻 / 解决方案 / 关于）
   ============================================ */

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 80px 0;
  color: var(--text-muted);
}
.empty-state-text {
  font-size: 18px;
  margin: 0 0 8px;
}
.empty-state-link {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}
.empty-state-link:hover { color: var(--navy); }

/* 图片占位（无图时显示渐变占位） */
.news-img-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-metric);
  font-size: 18px;
  letter-spacing: 0.2em;
}

/* 案例详情 */
.case-detail-hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  letter-spacing: 1px;
  border-radius: 2px;
  margin-bottom: 16px;
}
.case-detail-gallery {
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 102, 204, 0.15);
}
.case-detail-gallery img {
  width: 100%;
  display: block;
}
.case-detail-text {
  max-width: 900px;
  margin: 48px auto 0;
}
.case-detail-text .section-label {
  display: block;
  margin-bottom: 8px;
}
.case-detail-text-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 24px;
}
.case-detail-text-body {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
}
.case-detail-cta {
  text-align: center;
  margin-top: 40px;
}
.case-detail-cta .btn-outline { margin-left: 12px; }

/* 新闻列表工具栏（筛选 + 搜索） */
.news-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.news-toolbar .product-filter { margin-bottom: 0; justify-content: flex-start; }
.news-search {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.news-search input {
  height: 40px;
  width: 220px;
  padding: 0 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--bg-card);
  transition: border-color 0.2s;
}
.news-search input:focus {
  outline: none;
  border-color: var(--navy);
}
.news-search button {
  height: 40px;
  padding: 0 24px;
  border: none;
  border-radius: 6px;
  background: var(--navy);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}
.news-search button:hover { background: var(--navy-light); }

/* 解决方案 - 图文交替区块 */
.solution-feature-list {
  display: flex;
  flex-direction: column;
  gap: 80px;
}
.solution-feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.solution-feature-row.reverse .solution-feature-text {
  order: -1;
}
.solution-feature-img {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
}
.solution-feature-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.solution-feature-row:hover .solution-feature-img img {
  transform: scale(1.05);
}
.solution-feature-img-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-metric);
  font-size: 22px;
  letter-spacing: 0.2em;
}
.solution-feature-cat {
  display: inline-block;
  padding: 4px 14px;
  background: var(--navy-pale);
  color: var(--navy);
  font-size: 12px;
  letter-spacing: 0.1em;
  border-radius: 20px;
  margin-bottom: 16px;
}
.solution-feature-title {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 16px;
  line-height: 1.3;
}
.solution-feature-subtitle {
  font-size: 16px;
  color: var(--accent);
  font-weight: 500;
  margin: 0 0 16px;
}
.solution-feature-overview {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin: 0 0 24px;
}
.solution-feature-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--navy);
  color: #fff;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
}
.solution-feature-link:hover {
  background: var(--navy-light);
  transform: translateY(-2px);
}
.solution-feature-arrow {
  transition: transform 0.3s;
}
.solution-feature-link:hover .solution-feature-arrow {
  transform: translateX(4px);
}

/* 解决方案详情 - 大图 Banner */
.solution-detail-banner {
  position: relative;
  height: 480px;
  margin-top: 108px;
  overflow: hidden;
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 50%, var(--navy-light) 100%);
}
.solution-detail-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.solution-detail-banner-overlay {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 204, 0.85) 0%, rgba(0, 102, 204, 0.55) 100%);
}
.solution-detail-banner-content {
  position: absolute;
  bottom: 60px;
  left: 0; right: 0;
  z-index: 2;
}
.solution-detail-banner-label {
  display: block;
  font-family: var(--font-metric);
  font-size: 14px;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin: 0 0 12px;
}
.solution-detail-banner h1 {
  font-family: var(--font-serif);
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 12px;
  line-height: 1.3;
}
.solution-detail-banner p {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* 解决方案详情 - 段落区块（背景/概述） */
.solution-detail-block {
  max-width: 900px;
  margin: 0 auto;
}
.solution-detail-block .section-label {
  display: block;
  margin-bottom: 8px;
}
.solution-detail-block-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 24px;
}
.solution-detail-block-text {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
}

/* 关于我们 - 正文富文本 */
.about-content {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
}
.about-content p { margin: 0 0 16px; }

/* 内页补充响应式 */
@media (max-width: 992px) {
  .solution-feature-row { grid-template-columns: 1fr; gap: 30px; }
  .solution-feature-row.reverse .solution-feature-text { order: 0; }
  .news-toolbar { flex-direction: column; align-items: stretch; }
  .news-search { width: 100%; }
  .news-search input { flex: 1; width: auto; }
}
@media (max-width: 768px) {
  .solution-detail-banner { height: 320px; }
  .solution-detail-banner h1 { font-size: 28px; }
  .solution-detail-banner p { font-size: 15px; }
  .solution-feature-title { font-size: 24px; }
  .case-detail-cta .btn-outline { margin-left: 0; margin-top: 12px; }
  .solution-feature-list { gap: 50px; }
}

/* ============================================
   首页 - 解决方案预览区块
   ============================================ */
.solution-preview-section { background: var(--bg-main); }
.solution-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-preview-card {
  position: relative;
  display: block;
  height: 320px;
  border-radius: 8px;
  overflow: hidden;
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 60%, var(--navy-light) 100%);
  color: #fff;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.solution-preview-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.solution-preview-featured {
  grid-column: span 2;
  grid-row: span 2;
  height: 100%;
  min-height: 480px;
}
.solution-preview-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.solution-preview-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.solution-preview-card:hover .solution-preview-bg img { transform: scale(1.06); }
.solution-preview-bg-fallback {
  display: block;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 30% 30%, rgba(0, 153, 255, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(74, 111, 165, 0.25) 0%, transparent 50%);
}
.solution-preview-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(180deg, rgba(0, 77, 153, 0.15) 0%, rgba(0, 77, 153, 0.85) 100%);
}
.solution-preview-content {
  position: absolute;
  inset: 0;
  z-index: 3;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.solution-preview-cat {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-metric);
  font-size: 12px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 102, 204, 0.6);
  padding: 4px 10px;
  border-radius: 3px;
  margin-bottom: 12px;
}
.solution-preview-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
  line-height: 1.3;
  color: #fff;
}
.solution-preview-featured .solution-preview-title { font-size: 30px; }
.solution-preview-subtitle {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 8px;
}
.solution-preview-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin: 0 0 16px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.solution-preview-cta {
  display: inline-flex;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.solution-preview-arrow {
  margin-left: 8px;
  transition: transform 0.3s ease;
}
.solution-preview-card:hover .solution-preview-arrow { transform: translateX(4px); }

/* ============================================
   关于我们 - 研发实力区块
   ============================================ */
.rd-overview {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.rd-overview-text p {
  font-size: 16px;
  line-height: 2;
  color: var(--text-secondary);
  margin: 0 0 16px;
}
.rd-overview-text strong { color: var(--navy); font-weight: 700; }
.rd-overview-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 32px;
  background: var(--bg-card);
  border-radius: 8px;
  border-top: 3px solid var(--accent);
  box-shadow: var(--shadow);
}
.rd-overview-stat { text-align: center; }
.rd-overview-stat-num {
  font-family: var(--font-metric);
  font-size: 42px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
  line-height: 1;
}
.rd-overview-stat-num span { font-size: 24px; color: var(--accent); }
.rd-overview-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin: 8px 0 0;
}

/* CNAS 实验室 */
.rd-lab {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 80px;
}
.rd-lab-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 12px;
}
.rd-lab-visual-card {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: #fff;
  padding: 28px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.rd-lab-visual-label {
  font-family: var(--font-metric);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.rd-lab-visual-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}
.rd-lab-visual-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
}
.rd-lab-visual-img {
  height: 160px;
  border-radius: 8px;
  display: flex;
  align-items: flex-end;
  padding: 16px;
  position: relative;
  overflow: hidden;
}
.rd-lab-visual-img span {
  position: relative;
  z-index: 2;
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
.rd-lab-visual-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 77, 153, 0.7) 100%);
}
.rd-lab-visual-img-1 { background: linear-gradient(135deg, #0088EE 0%, #4DA6FF 50%, #6B8DB8 100%); }
.rd-lab-visual-img-2 { background: linear-gradient(135deg, #0066CC 0%, #0088EE 50%, #0066CC 100%); }
.rd-lab-visual-img-3 { background: linear-gradient(135deg, #004D99 0%, #0066CC 60%, #0088EE 100%); }
.rd-lab-text .section-label { display: block; margin-bottom: 8px; }
.rd-lab-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 20px;
}
.rd-lab-text p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin: 0 0 14px;
}
.rd-lab-text strong { color: var(--navy); }
.rd-lab-caps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 24px;
}
.rd-lab-cap {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 12px 4px;
  background: var(--bg-card);
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.rd-lab-cap:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.rd-lab-cap-icon {
  width: 36px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  background: linear-gradient(135deg, var(--navy), var(--navy-light));
  color: #fff;
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}
.rd-lab-cap span:last-child {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 资质认证 */
.rd-certs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.rd-cert-item {
  background: var(--bg-card);
  padding: 24px 16px;
  border-radius: 8px;
  border-left: 3px solid var(--accent);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform 0.2s;
}
.rd-cert-item:hover { transform: translateY(-3px); }
.rd-cert-name {
  display: block;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
  line-height: 1.4;
}
.rd-cert-desc {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   解决方案详情 - 行业痛点
   ============================================ */
.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-point-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  background: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}
.pain-point-item:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.pain-point-num {
  font-family: var(--font-metric);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  opacity: 0.5;
  flex-shrink: 0;
}
.pain-point-body { flex: 1; }
.pain-point-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0 0 10px;
}
.pain-point-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin: 0;
}
.pain-point-icon {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  background: rgba(0, 153, 255, 0.12);
  color: var(--accent);
  border-radius: 50%;
  font-size: 14px;
  font-weight: 700;
}

/* ============================================
   案例详情 - 项目信息与多视角
   ============================================ */
.case-detail-info {
  margin-top: 60px;
  padding: 40px;
  background: var(--bg-card);
  border-radius: 8px;
  box-shadow: var(--shadow);
}
.case-detail-info .section-label { display: block; margin-bottom: 8px; }
.case-detail-info .case-detail-text-title { margin-bottom: 28px; }
.case-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-info-item {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}
.case-info-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.case-info-value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.5;
}

.case-detail-perspectives {
  margin-top: 60px;
}
.case-detail-perspectives .section-label { display: block; margin-bottom: 8px; }
.case-perspective-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}
.case-perspective-item {
  position: relative;
  height: 240px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-section);
}
.case-perspective-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.case-perspective-item:hover img { transform: scale(1.05); }
.case-perspective-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  display: inline-block;
  padding: 6px 14px;
  background: rgba(0, 102, 204, 0.85);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.case-perspective-day img { filter: brightness(1.05) saturate(1.05); }
.case-perspective-night::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(0, 77, 153, 0.45) 0%, rgba(0, 77, 153, 0.2) 100%);
  pointer-events: none;
}
.case-perspective-night img { filter: brightness(0.78) saturate(1.3) hue-rotate(-10deg); }
.case-perspective-detail img { filter: contrast(1.1) saturate(1.1); transform: scale(1.1); }

/* ============================================
   产品详情 - 产品性能
   ============================================ */
.product-performance-section {
  background: linear-gradient(135deg, #004D99 0%, var(--navy) 50%, var(--navy-light) 100%);
  position: relative;
  overflow: hidden;
}
.product-performance-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 28%, rgba(0, 153, 255, 0.10) 0%, transparent 45%),
    radial-gradient(circle at 82% 72%, rgba(74, 111, 165, 0.22) 0%, transparent 45%);
  pointer-events: none;
}
.product-performance-section .container { position: relative; z-index: 1; }
.product-perf-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-perf-item {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}
.product-perf-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(0, 153, 255, 0.4);
  transform: translateY(-3px);
}
.product-perf-value {
  font-family: var(--font-metric);
  font-size: 42px;
  font-weight: 700;
  color: #fff;
  margin: 0;
  line-height: 1;
}
.product-perf-suffix {
  font-size: 18px;
  color: var(--accent);
  margin-left: 4px;
}
.product-perf-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin: 12px 0 0;
  letter-spacing: 0.05em;
}

/* ============================================
   首页关于德洛斯 - 工程数据行
   ============================================ */
.about-engineering {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 28px 0 12px;
  border-top: 1px solid rgba(255,255,255,0.15);
  margin-top: 24px;
}
.about-engineering-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}
.about-engineering-num {
  font-family: var(--font-metric);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.about-engineering-num span {
  font-size: 16px;
  color: var(--accent);
}
.about-engineering-item > span:last-child {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
}

/* ============================================
   首页4大产品主类区块
   ============================================ */
.home-cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.home-cat-block {
  background: var(--bg-card);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow 0.3s ease;
}
.home-cat-block:hover {
  box-shadow: var(--shadow-lg);
}
.home-cat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 12px;
  border-bottom: 1px solid var(--border);
}
.home-cat-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
  margin: 0;
}
.home-cat-link {
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}
.home-cat-link:hover { opacity: 0.7; }
.home-cat-desc {
  padding: 12px 20px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.home-cat-subs {
  padding: 6px 20px 0;
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.6;
}
.home-cat-products {
  padding: 12px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.home-cat-product {
  display: flex;
  gap: 12px;
  text-decoration: none;
  padding: 12px;
  border-radius: 6px;
  background: var(--bg-section);
  transition: all 0.2s ease;
}
.home-cat-product:hover {
  background: var(--navy-pale);
  transform: translateY(-2px);
}
.home-cat-product-img {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-card);
}
.home-cat-product-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.home-cat-product-info { flex: 1; min-width: 0; }
.home-cat-product-model {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.home-cat-product-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0 0 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.home-cat-product-params {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
}
.home-cat-product-param {
  font-size: 11px;
  color: var(--text-secondary);
}
.home-cat-empty {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  padding: 20px 0;
  margin: 0;
}

/* ============================================
   新增区块响应式
   ============================================ */
@media (max-width: 1200px) {
  .solution-preview-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-preview-featured { grid-column: span 2; min-height: 360px; }
  .rd-overview { grid-template-columns: 1fr; gap: 40px; }
  .rd-lab { grid-template-columns: 1fr; gap: 40px; }
  .rd-certs { grid-template-columns: repeat(3, 1fr); }
  .rd-lab-caps { grid-template-columns: repeat(5, 1fr); }
}
@media (max-width: 992px) {
  .pain-points-grid { grid-template-columns: repeat(2, 1fr); }
  .case-info-grid { grid-template-columns: repeat(2, 1fr); }
  .product-perf-grid { grid-template-columns: repeat(2, 1fr); }
  .case-perspective-grid { grid-template-columns: 1fr 1fr; }
  .case-perspective-item:last-child { grid-column: span 2; }
  .home-cat-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .solution-preview-grid { grid-template-columns: 1fr; }
  .solution-preview-featured { grid-column: span 1; min-height: 280px; }
  .solution-preview-card { height: 240px; }
  .pain-points-grid { grid-template-columns: 1fr; }
  .case-info-grid { grid-template-columns: 1fr; }
  .product-perf-grid { grid-template-columns: 1fr 1fr; }
  .rd-overview-stats { grid-template-columns: repeat(3, 1fr); padding: 20px; }
  .rd-overview-stat-num { font-size: 32px; }
  .rd-lab-visual { grid-template-columns: 1fr 1fr; }
  .rd-certs { grid-template-columns: repeat(2, 1fr); }
  .rd-lab-caps { grid-template-columns: repeat(3, 1fr); }
  .case-perspective-grid { grid-template-columns: 1fr; }
  .case-perspective-item:last-child { grid-column: span 1; }
  .case-detail-info { padding: 24px; }
  .home-cat-grid { grid-template-columns: 1fr; }
}

/* 子页面Banner - 2560×800标准版 */
.page-banner-img { position: relative; padding-top: 108px; height: 520px; min-height: 400px; overflow: hidden; }
.page-banner-img .banner-bg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: var(--navy); }
.page-banner-img .banner-bg img { width: 100%; height: 100%; object-fit: cover; }
.page-banner-gradient-inner { position: relative; z-index: 2; max-width: 1440px; margin: 0 auto; padding: 120px 40px 0; }
.page-banner-gradient-label { font-family: var(--font-metric); font-size: 13px; letter-spacing: 0.3em; color: var(--gold); text-transform: uppercase; margin-bottom: 16px; }
.page-banner-gradient-title { font-family: var(--font-serif); font-size: 44px; font-weight: 700; color: #fff; margin: 0 0 16px; letter-spacing: 0.04em; }
.page-banner-gradient-desc { font-size: 16px; color: rgba(255,255,255,0.78); max-width: 600px; line-height: 1.8; }
.banner-gradient-bar { position: absolute; bottom: 0; left: 0; right: 0; height: 2px; background: linear-gradient(90deg, transparent 0%, var(--gold) 50%, transparent 100%); z-index: 3; }

/* ========== V3 Visual Enhancements (Blue-White Business, 2026-07-16) ========== */

/* Navbar: collapse topbar on scroll + compact navbar + shadow */
.topbar { transition: transform 0.35s ease; }
body.nav-scrolled .topbar { transform: translateY(-100%); }
body.nav-scrolled .navbar {
  top: 0;
  box-shadow: 0 4px 20px rgba(10, 31, 61, 0.08), 0 1px 3px rgba(10, 31, 61, 0.04);
}
.navbar-inner { transition: height 0.3s ease; }
body.nav-scrolled .navbar-inner { height: 60px; }

/* Product card hover enhancement */
.product-card-v2 {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.product-card-v2:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px -12px rgba(10, 31, 61, 0.15), 0 4px 12px -4px rgba(10, 31, 61, 0.08);
}
.product-card-v2-visual { overflow: hidden; }
.product-card-v2-visual img { transition: transform 0.5s ease; }
.product-card-v2:hover .product-card-v2-visual img { transform: scale(1.06); }
.product-card-v2-cta-arrow { transition: transform 0.3s ease; display: inline-block; }
.product-card-v2:hover .product-card-v2-cta-arrow { transform: translateX(4px); }

/* Button interaction enhancement */
.btn-primary {
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -6px rgba(14, 58, 111, 0.4);
}
.btn-outline { transition: all 0.25s ease; }
.btn-outline:hover { transform: translateY(-1px); }

/* News card hover enhancement */
.news-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px -12px rgba(10, 31, 61, 0.15);
}
.news-card-img { overflow: hidden; }
.news-card-img img { transition: transform 0.5s ease; }
.news-card:hover .news-card-img img { transform: scale(1.06); }

/* Homepage category block hover enhancement */
.home-cat-block { transition: box-shadow 0.3s ease; }
.home-cat-block:hover { box-shadow: 0 12px 32px -10px rgba(10, 31, 61, 0.10); }
.home-cat-product { transition: transform 0.25s ease, box-shadow 0.25s ease; }
.home-cat-product:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -6px rgba(10, 31, 61, 0.12);
}
.home-cat-product-img { overflow: hidden; }
.home-cat-product-img img { transition: transform 0.5s ease; }
.home-cat-product:hover .home-cat-product-img img { transform: scale(1.05); }

/* Navbar menu underline animation */
.navbar-menu a::after { transition: width 0.3s ease; }
.navbar-menu a.active::after { width: 100%; }

/* Detail page main image hover */
.product-detail-visual { overflow: hidden; }
.product-detail-visual img { transition: transform 0.6s ease; }
.product-detail-visual:hover img { transform: scale(1.03); }

/* Scrollbar styling (blue-white) */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #F6F8FB; }
::-webkit-scrollbar-thumb { background: #C5D3E4; border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--navy-light); }

/* Text selection color */
::selection { background: var(--navy); color: #fff; }